An anonymous director reports

ADVENTUS ANNOUNCES THE FILING OF ITS PRELIMINARY ECONOMIC ASSESSMENT FOR THE EL DOMO VMS DEPOSIT, CURIPAMBA PROJECT

Following the news release on May 2, 2019, of an independent preliminary economic assessment that includes an updated mineral resource estimate for the El Domo volcanogenic massive sulphide (VMS) deposit within the 21,537-hectare Curipamba project in Ecuador, the company has filed the National Instrument 43-101 technical report on SEDAR.

The technical report has been prepared in accordance with Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards on Mineral Resources and Reserves that establish definitions and guidance on the definitions for mineral resources, mineral reserves and mining studies used in Canada. The mineral resource, mineral reserve and mining study definitions are incorporated, by reference, into National Instrument 43-101 (Standards of Disclosure for Mineral Projects).

There are no material differences between information disclosed in the company's May 2, 2019, news release and the technical report.

Qualified persons

The technical report, entitled "Technical Report on the Preliminary Economic Assessment for the Curipamba Project -- El Domo Deposit, Central Ecuador," was authored by Roscoe Postle Associates Inc. (RPA) and Knight Piesold. The following independent qualified persons (IQPs) co-wrote the technical report: metallurgy and processing: Avakash Patel, PEng, RPA; geology, exploration and mineral resource: Dorota El Rassi, PEng, RPA; mining: Hugo Miranda, PEng, RPA; infrastructure and economic evaluation: Torben Jensen, PEng, RPA; and environmental and community: Ken Embree, PEng, Knight Piesold. Each of the individuals is an IQP for the purposes of NI 43-101. All scientific and technical information in the technical report is based on information prepared by or under the supervision of those individuals.

About Adventus Mining Corp.

Adventus is a well-financed exploration and project development company, focused on Ecuador. Its strategic shareholders include Altius Minerals Corp., Greenstone Resources LP, Resource Capital Funds, Wheaton Precious Metals Corp. and the Nobis Group of Ecuador. Adventus is leading the exploration and engineering advancement of the Curipamba copper-gold-zinc project in Ecuador as part of an earn-in agreement to obtain a 75-per-cent ownership interest. In addition, Adventus is engaged in a countrywide exploration alliance with its partners in Ecuador, which has incorporated the Pijili and Santiago projects to date.

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